As an expert in the charging pile industry, EVDANCE has rich experience in the development and manufacturing of intelligent EV charging solutions. This is where we turn our engineering insights into knowledge and share them with the global EV community.
Relays, contactors, RCD modules and meters: the four component families that switch, protect and measure inside an EV charger, explained for buyers.
Relay or contactor? Both switch power in an EV charger — the choice is duty: rated current, breaking load, operations per day, and AC versus DC arcs.
A welded contactor cannot cut power, and every other protection acts through it. How chargers detect a stuck-closed switch — and the four questions buyers should ask.
Buying an RDC-DD module for a charger design: why the tested device (IEC 62955) is not a bare sensor, what to specify, and what evidence to demand.
Billing decides the meter: when session energy is resold, specify an approved meter (MID in the EU system), the right accuracy class, and the certificate — in writing.
PC, ABS, blends, ASA or aluminium? The housing choice turns on impact, sun and heat — and UV resistance lives in the exact resin grade, not the family name.
IP65 and IP66 are built, not printed: gaskets, glands matched to the cable, sealed seams — then the whole assembled charger is dust- and jet-tested. Here is how.
An IK test strikes a mounted charger housing with a calibrated hammer — 5 J for IK08, 20 J for IK10 — then checks for cracks and probe access. What labs do, step by step.
A 32 A charger runs at full current for hours inside a sealed IP-rated box. How thermal design moves that heat out — and the test evidence a buyer should ask for.
Conformal coating seals a charger’s circuit board against moisture, dust and salt air. When the added process earns its cost — and when it does not.
